Xeon Silver 4509Y vs Core i9-11900T
Xeon Silver 4509Y
Core i9-11900T
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon Silver 4509Y
Performance Per Dollar Core i9-11900T
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Silver 4509Y | Core i9-11900T |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($413) |
| Longevity | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) | ✨ Modern (Rocket Lake (2021) / 14 nm) |
💎 Value Proposition
| Insight | Xeon Silver 4509Y | Core i9-11900T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($413) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Xeon Silver 4509Y and Core i9-11900T
Xeon Silver 4509Y
The Xeon Silver 4509Y is manufactured by Intel. It was released in 14 December 2023 (1 year ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 8 cores and 16 threads. Base frequency is 2.6 GHz, with boost up to 4.1 GHz. L3 cache: 22.5 MB (total). L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 125 Watt. Memory support: DDR5 @ 4400 MT/s (1 DPC &2DPC). Passmark benchmark score: 18,749 points. Launch price was $563.
Core i9-11900T
The Core i9-11900T is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 8 cores and 16 threads. Base frequency is 1.5 GHz, with boost up to 4.9 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-3200. Passmark benchmark score: 18,620 points. Launch price was $299.
Processing Power
Both the Xeon Silver 4509Y and Core i9-11900T share an identical 8-core/16-thread configuration. Boost clocks reach 4.1 GHz on the Xeon Silver 4509Y versus 4.9 GHz on the Core i9-11900T — a 17.8% clock advantage for the Core i9-11900T (base: 2.6 GHz vs 1.5 GHz). The Xeon Silver 4509Y uses the Sapphire Rapids (2023−2024) architecture (Intel 7 nm), while the Core i9-11900T uses Rocket Lake (2021) (14 nm). In PassMark, the Xeon Silver 4509Y scores 18,749 against the Core i9-11900T's 18,620 — a 0.7% lead for the Xeon Silver 4509Y. L3 cache: 22.5 MB (total) on the Xeon Silver 4509Y vs 16 MB (total) on the Core i9-11900T.
| Feature | Xeon Silver 4509Y | Core i9-11900T |
|---|---|---|
| Cores / Threads | 8 / 16 | 8 / 16 |
| Boost Clock | 4.1 GHz | 4.9 GHz+20% |
| Base Clock | 2.6 GHz+73% | 1.5 GHz |
| L3 Cache | 22.5 MB (total)+41% | 16 MB (total) |
| L2 Cache | 2 MB (per core)+700% | 256K (per core) |
| Process | Intel 7 nm-50% | 14 nm |
| Architecture | Sapphire Rapids (2023−2024) | Rocket Lake (2021) |
| PassMark | 18,749 | 18,620 |
| Geekbench 6 Single | — | 2,100 |
| Geekbench 6 Multi | — | 9,200 |
Memory & Platform
The Xeon Silver 4509Y uses the LGA4677 socket (PCIe 3.0), while the Core i9-11900T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Xeon Silver 4509Y | Core i9-11900T |
|---|---|---|
| Socket | LGA4677 | LGA1200 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | DDR4-3200 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 20 |
Advanced Features
Virtualization: not specified (Xeon Silver 4509Y) / VT-x, VT-d (Core i9-11900T). The Core i9-11900T includes integrated graphics (Intel UHD Graphics 750), while the Xeon Silver 4509Y requires a dedicated GPU. Primary use case: Core i9-11900T targets Low Power High Perf Desktop.
| Feature | Xeon Silver 4509Y | Core i9-11900T |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel UHD Graphics 750 |
| Unlocked | — | No |
| AVX-512 | — | Yes |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Low Power High Perf Desktop |
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